Match each of the following characteristics listed below with the appropriate viruses: 17.They possess both DNA and RNA 18.They have nucleocapsid 19.hey have cell wall 20.They reproduce by binary fission A. Naked viruses B. Enveloped viruses C. Both A and B D. Neither A no B

## Step 1<br />The problem involves matching the characteristics of viruses with the appropriate types of viruses. The characteristics are:<br />17. They possess both DNA and RNA<br />18. They have nucleocapsid<br />19. They have cell wall<br />20. They reproduce by binary fission<br /><br />## Step 2<br />Let's analyze each characteristic one by one.<br /><br />### 17. They possess both DNA and RNA<br />This characteristic is not typical of any known virus. Viruses are either DNA or RNA viruses, but not both. Therefore, the answer to this characteristic is D. Neither A nor B.<br /><br />### 18. They have nucleocapsid<br />Nucleocapsids are protein-coated viral genomes. Both naked and enveloped viruses can have nucleocapsids. Therefore, the answer to this characteristic is C. Both A and B.<br /><br />### 19. They have cell wall<br />Naked viruses have a cell wall, while enveloped viruses do not. Therefore, the answer to this characteristic is A. Naked viruses.<br /><br />### 20. They reproduce by binary fission<br />Binary fission is a method of asexual reproduction used by bacteria, not viruses. Therefore, the answer to this characteristic is D. Neither A nor B.